Would something like a Sanction be considered a chain that could be shattered?

Also, regarding the "in dreams" functionality of Shacklebreaker - outside the Jaunt, does that mean I'd have to find a way to take a lucid dreaming skill for Allura for it to be used, or is there more flexibility once the Jaunt is over, similar to the Archetypal [X] Magic skills being usable while a Traveler's awake?